<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.6.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
    <script src="https://cdn.bootcdn.net/ajax/libs/popper.js/2.11.2/cjs/popper.min.js"></script>
    <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.6.1/js/bootstrap.bundle.min.js"></script>
    <title>Title</title>
</head>
<body>
index.html

</body>
</html>